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Rob Hooft <rob@hooft.net>:

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Description of fcntl():  Added description of what can go wrong.
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Fred Drake 2000-08-02 20:53:51 +00:00
parent a2214c37fd
commit 6c7a46a2f0
1 changed files with 8 additions and 2 deletions
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10
Doc/lib/libfcntl.tex
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@ -30,8 +30,14 @@ The module defines the following functions:
structure, e.g.\ created by \function{struct.pack()}. The binary
data is copied to a buffer whose address is passed to the C
\cfunction{fcntl()} call. The return value after a successful call
is the contents of the buffer, converted to a string object. In
case the \cfunction{fcntl()} fails, an \exception{IOError} is
is the contents of the buffer, converted to a string object. The length
of the returned string will be the same as the length of the \var{arg}
argument. This is limited to 1024 bytes. If the information returned
in the buffer by the operating system is larger than 1024 bytes,
this is most likely to result in a segmentation violation or a more
subtle data corruption.
If the \cfunction{fcntl()} fails, an \exception{IOError} is
raised.
\end{funcdesc}